Home / 281,493.50-422,140.68-81,772.34

Finding the Fourth Proportional to 281,493.50, 422,140.68 and 81,772.34

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Solution

The fourth proportional to 281,493.50, 422,140.68 and 81,772.34 is: 122,629.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,493.50 : 422,140.68 = 81,772.34 : x
  2. Step 2: Convert to fraction form
    281,493.50/422,140.68 = 81,772.34/x
  3. Step 3: Cross multiply
    281,493.50x = 422,140.68 × 81,772.34
  4. Step 4: Simplify right side
    281,493.50x = 34,519,429,102.09
  5. Step 5: Solve for x
    x = 34,519,429,102.09/281,493.50
  6. Step 6: Final answer
    x = 122,629.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.